#back{
    position:fixed;
  top: 0;
  left: 0;
  width:100%;
  height:100%;
  min-width: 1000px;
  z-index:-10;
  zoom: 1;
  background-color: #fff;
  background-repeat: no-repeat;
  background-size: cover;
  -webkit-background-size: cover;
  -o-background-size: cover;
  background-position: center 0;
}
#notes{
    text-align: center;
    margin-top: 330px;
    width: 200px;
    height: 50px;
    font-size: 30px;
    background-color:  rgba(255, 255, 255, 0.8);
    margin-left:auto;
    margin-right:auto;
    border-radius:20px;
    
}
#notes i{
    font-size: 30px;
}

#essay{
    text-align: center;
    margin-left:auto;
    margin-right:auto;
    margin-top: 50px;
    width: 200px;
    height: 50px;
    font-size: 30px;
    background-color:  rgba(255, 255, 255, 0.8);
    border-radius:20px;
    
}
#essay i{
    font-size: 30px;
}